Double loop technology

US8796400B2 · kind B2 · utility

Assignee

• TOTAL RESEARCH & TECHNOLOGY FELUY · BE

Inventors

• Louis Fouarge · Dilbeek, BE
• Eric Damme · Arquennes, BE
• Olivier Miserque · Mont-Saint-Guibert, BE
• Daniel Siraux · Naast, BE
• Philippe Bodart · Amay, BE
• Andre Lewalle · Brussels, BE
• Marc Van der Auwera · Tervuren, BE
• Frans Van den Brande · Mortsel, BE
• Giacomo Conti · Maurage, BE
• Hugo Vandaele · Sint-Andries, BE
• Mark Verleysen · Ekeren, BE
• Carl Van Camp · Beveren, BE
• Etienne Laurent · Seneffe, BE
• Philippe Marechal · Nivelles, BE
• Marc Moers · Ekeren, BE
• Leopold D'Hooghe · Kapellen, BE
• Marjan Sillis · Edegem, BE
• Kai Hortman · Dilbeek, BE
• Pascal Folie · Courcelles, BE
• Renaud Oreins · Wavre, BE

Key dates

• Filing date: Jun 14, 2013
• Grant date: Aug 5, 2014
• Expiry date: Jun 14, 2033

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/86035
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A method for the copolymerization of ethylene and a C3+ olefin in a loop reactor and polymers formed therefrom are described herein. The method generally includes introducing an ethylene monomer, a C3+ olefin and a diluent carrier liquid into a loop reactor. A catalyst system can be supplied to said loop reactor. The diluent liquid, ethylene monomer, and C3+ olefin can be circulated through said loop reactor, while copolymerizing said ethylene and C3+ olefin in the presence of said catalyst system to produce a slurry. The slurry can be diverted into a settling leg, and sequentially discharged therefrom and withdrawn from said loop reactor. An ethylene monomer co-feed can be introduced into said loop reactor at spaced locations downstream of the ethylene and diluent. The ethylene co-feed can be introduced in an amount effective to reduce the variation in the ratio of ethylene and C3+ olefin.